Table 7.
# of patients available for analysis | Prevalence | Sensitivity | Specificity | Positive predictive value | Negative predictive value | |
---|---|---|---|---|---|---|
B-mode imaging | 115† | 12.2% (14/115) | 85.7% (12/14) | 100.0% (101/101) | 100.0% (12/12) | 98.0% (101/103) |
Color Doppler | 98‡ | 14.3% (14/98) | 92.9% (13/14) | 98.8% (83/84) | 92.9% (13/14) | 98.8% (83/84) |
Complete follow-up was available in 131/172 patients scanned by B-mode imaging (76.2%) (excluding cases of isolated VSDs). Sixteen patients were excluded from this portion of the analysis: one patient whose images were interpreted as tetralogy of Fallot but who was found at the time of surgery to have a subaortic VSD associated with transposition of the great arteries, and 15 patients whose ultrasonographic images were considered to be of poor diagnostic quality.
Complete follow-up was available in 105/142 patients scanned by color Doppler (61.0%) (excluding cases of isolated VSDs). Seven patients were excluded from this portion of the analysis: in all cases, the ultrasonographic images were considered to be of poor diagnostic quality.
TUI: Tomographic Ultrasound Imaging; VSF: ventricular septal defects.